these 3 derivations will be built:
  /nix/store/hn9pf31rr2bd65ys1fkdcsfgrnqndasq-source.drv
  /nix/store/xsbzakmlwrj2aa01cp12v38s0kwqbp47-spec-kit-1.2.2.drv
  /nix/store/m0qlamx4q0q9s8fjdlnrm80585wh021s-check-spec-kit.drv
xsbzakmlwrj2aa01cp12v38s0kwqbp47-spec-kit-1.2.2.drv: mac02: not scheduled here: xsbzakmlwrj2aa01cp12v38s0kwqbp47-spec-kit-1.2.2.drv, asking the scheduler again